adding javascript

i am trying to add some scripts to my site and yet when insert the script links ( they are on an another server it does not seem to work) please can someone help me its urgent.
below is an example of how the scripts are linked to my site

if i put the script in an HTML none joomla page it works fine.


<link href=" xyz.com/css/pibe.css " rel="stylesheet" type="text/css" />
<script type="text/javascript" src=" xyz.com/scripts/calendar.js ">
<script type="text/javascript" src=" xyz.com/scripts/jsDate.js ">
<script type="text/javascript" src=" xyz.com/scripts/pibe.js ">
</head>

How do you mean that, so you put that in index.php just above </head> . Is something other does not work ask that script providers